Hydrophobic microcrystalline cellulose/polyethyleneimine composite aerogel for effective sound absorption
Xin Jia,
Guijiang Tang,
Jinming Gao
et al.
Abstract:A hydrophobic and ultralight cellulose aerogel (CA) was reinforced by polyethyleneimine (PEI) and functionalized by methyltrimethoxysilane (MTMS). Adding PEI improved the mechanical strength and the elastic resilience of the resulting material due to the flexibility enhancement of the cellulose chains, which prevented the collapse of the pore structure and contributed to the uniform pore size distribution. The hydrophobic property of the aerogels with the functionalization of MTMS was improved, which can preve… Show more
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